Improvement in carbureters



w`. T. McMILLENI Carbureters.

No.143,523. l Patentedocr.7,1s73.

UNITED STATES PATENT GEEIcE.

WILLIAM T. MCMILLEN, OF CINCINNATI, OHIO.

IMPROVEMENT IN CARBURETERS.

Specification forming part of Letters Patent No. 143,523., dated October7, 1873; application filed February 24, 1873.

To all whom it may concer/n Be it known that I, WILLIAM T. MCMILLEN ofCincinnati, in the county of Hamilton and State of Ohio, have invented anewand Improved Carbureter; and I do hereby declare the following to bea full and exact description of the same, reference being had to theaccompanying drawings forming part of this specification, in which-Figure l is a top-plan view of my improved carbureter, with the coverremoved; Fig. 2, an elevation with the side broken away to shovr theinterior construction; and Fig. 3, a vertical section of the floatingair-chamber.

Similar letters of reference in the accompanying drawings indicate thesame parts.

My invention consists in providing a floating air-chamber, resting onthe surface of the hydrocarbon liquid contained in the carbureter, whichshall automatically conform to the varying height of the liquid withoutchanging the length of the supply-pipe, the air-reservoir being jointedby means of angular pipes and a trunnion, as hereinafter more fully setforth.

In the accompanying drawings, A is the oylindrical case of theoarbiueter, constructed with the conical top B, from the apex of whichprojects the discharge-pipe G. D is the airreservoir, having a closedbottom, E, and provided upon its top with a short right-angular pipe, F,which receives the short arm of a second right-angular pipe, G. Theopposite end of this latter pipe enters the end of a third angular pipe,H, as shown. I is a plate secured within the case A upon one side andnear the top, and J is a short angular pipe firmly attached in ahorizontal position to one end of said plate, so as to enter the longerend of the pipe H. The opposite end of the plate I is provided withanrear, K, which affords thenecessarybearings for a trunnion, L, formedautomatically rise and fall as the quantity of liquid is increased ordiminished. By this construction, therefore, the air supplied to thereservoir is forced through the liquid under all circumstances, and itsriohnessin hydrocarbon rendered uniform. lM is the air-supply pipe,extending from the rigid pipe J upward through the top of thecarburetor, and connecting with a blower, fan, or other suitableair-forcing apparatus. N is the supplypipe for the liquid, provided witha suitable stop-cock, and O is a secondary air-pipe, to be used for anadditional supply of air, if required. l f j The operation of theapparatus thus far described is as follows: The requisite quantity ofgasoline or other hydrocarbon liquid is supplied to the vessel A throughthe pipe N, and the air forced, through the pipe M and the jointed pipespreviously described, into the airreservoir D, from which it isdischarged into the liquid through the series of funnel-shaped openingsor conduits P, secured in the bottom of such reservoir, as shown. Afterpassing through the liquid it escapes above the same thoroughly chargedwith the hydrocarbon, and is drawn off through the pipe C to theburners. The funnel-shaped conduits P facilitate the discharge of airfrom the reservoir, and prevent the introduction of liquid thereto whenthe air is not under pressure.

It sometimes happens that from some cause the supply of air from theforcing apparatus isv momentarily suspended. When this occurs incarbureters unprovided with the air-reservoir, the supply of hydrocarbonvapor is also suspended, and the light at the burners extinguished. Theiioating air-reservoir, however, overcomes this difliculty, as it holdssufficient air to keep up the supply through the liquid during themomentary stoppage of the forcing apparatus.

Q Q are a series of vertical pipes, oon structed of wire-gauze andarranged around the interior of the case, as shown, so as to extendconsiderably above the liquid. They are covered and lined with cloth orother suitable.

absorbent, which, by capillary attraction, shall elevatecertain-quantities of the liquid and promote its evaporation. By thismeans the surface exposed to the action of the air is greatly increased.

In using the carbureter I prefer to bury it in the earth several feet,and to surround it with a suitable packing of sawdust or spent tan-bark,to prevent freezing in Winter, and to preserve as nearly as possible auniform temperature.

Having thus described my invention, What I claim as ner is- 1. Theair-reservoir D, jointed to the rigid supply-pipe by means of theangular. pipes F G H and the trunnion L, turning` in suitable bearings,substantially as described, for the purpose specified.

2. The angular pipe H, adapted to turn as the reservoir rises or fallsby means of the trunnion L and its bearings, and the rigid angular pipeJ, entering the end of said pipe H in line with the trunnion,substantially as described. e A

W. T. MCMILLEN.

Witnesses:

MELVILLE CHURCH, E. A. ELLsWoRTH.

